A common mineral found in the lining of veins and arteries of a sector of females.
It has a strange property that hasn't been fully understood by biologists and physicists.
It's been observed that this material acts as a gateway for chromosomes to become absorbed through the walls of the blood ways. And become one with the blood.
Thus sapping the female ecosystem slowly but surely of all of their 13th chromosome.
In the core of the blood system. The heart. There is an abundance of tumblrite
This behaves strangely. Once a months worth of chromosomes have been collected in the blood stream. The mineral forces the heart to pump this blood to the ovaries to fuel next egg with concentrated chromoexcrement.
This is then expelled from the vagina over a week in the form of a dense red paste
This changes the hormone cycle drastically and gives them the strong urge. For the rest of their life. To become a fucking moron.
Girls that contain tumblrite happen to be called tumblrites, Because once the chromosomes are gone their classification from human changes

You know jess? She's become a tumblrite. She's shaved half her head and dyed it green. She thinks she doesnt need a dick to be a boy.